Zonca Voghera style articulated arm desk lamp

Total length 93 cm 1st arm 30 cm 2nd arm 42 cm rocker 15 cm head diameter 12 cm foot diameter 18 the lamp needs to be cleaned. The metal is stained or slightly pitted in places. It works (bulbs not supplied) the 1st arm pivots from right to left weighted foot probably zonca voghera but the label is no longer under the foot.